ID   KHSE_BACP2              Reviewed;         310 AA.
AC   A8FH24;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-NOV-2007, sequence version 1.
DT   03-AUG-2022, entry version 82.
DE   RecName: Full=Homoserine kinase {ECO:0000255|HAMAP-Rule:MF_00384};
DE            Short=HK {ECO:0000255|HAMAP-Rule:MF_00384};
DE            Short=HSK {ECO:0000255|HAMAP-Rule:MF_00384};
DE            EC=2.7.1.39 {ECO:0000255|HAMAP-Rule:MF_00384};
GN   Name=thrB {ECO:0000255|HAMAP-Rule:MF_00384}; OrderedLocusNames=BPUM_2886;
OS   Bacillus pumilus (strain SAFR-032).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus.
OX   NCBI_TaxID=315750;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SAFR-032;
RX   PubMed=17895969; DOI=10.1371/journal.pone.0000928;
RA   Gioia J., Yerrapragada S., Qin X., Jiang H., Igboeli O.C., Muzny D.,
RA   Dugan-Rocha S., Ding Y., Hawes A., Liu W., Perez L., Kovar C., Dinh H.,
RA   Lee S., Nazareth L., Blyth P., Holder M., Buhay C., Tirumalai M.R., Liu Y.,
RA   Dasgupta I., Bokhetache L., Fujita M., Karouia F., Eswara Moorthy P.,
RA   Siefert J., Uzman A., Buzumbo P., Verma A., Zwiya H., McWilliams B.D.,
RA   Olowu A., Clinkenbeard K.D., Newcombe D., Golebiewski L., Petrosino J.F.,
RA   Nicholson W.L., Fox G.E., Venkateswaran K., Highlander S.K.,
RA   Weinstock G.M.;
RT   "Paradoxical DNA repair and peroxide resistance gene conservation in
RT   Bacillus pumilus SAFR-032.";
RL   PLoS ONE 2:E928-E928(2007).
CC   -!- FUNCTION: Catalyzes the ATP-dependent phosphorylation of L-homoserine
CC       to L-homoserine phosphate. {ECO:0000255|HAMAP-Rule:MF_00384}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-homoserine = ADP + H(+) + O-phospho-L-homoserine;
CC         Xref=Rhea:RHEA:13985, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:57476, ChEBI:CHEBI:57590, ChEBI:CHEBI:456216;
CC         EC=2.7.1.39; Evidence={ECO:0000255|HAMAP-Rule:MF_00384};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC       from L-aspartate: step 4/5. {ECO:0000255|HAMAP-Rule:MF_00384}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00384}.
CC   -!- SIMILARITY: Belongs to the GHMP kinase family. Homoserine kinase
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00384}.
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DR   EMBL; CP000813; ABV63541.1; -; Genomic_DNA.
DR   RefSeq; WP_012011146.1; NZ_VEIS01000008.1.
DR   AlphaFoldDB; A8FH24; -.
DR   SMR; A8FH24; -.
DR   STRING; 315750.BPUM_2886; -.
DR   EnsemblBacteria; ABV63541; ABV63541; BPUM_2886.
DR   KEGG; bpu:BPUM_2886; -.
DR   eggNOG; COG0083; Bacteria.
DR   HOGENOM; CLU_041243_0_0_9; -.
DR   OMA; CANRIPH; -.
DR   OrthoDB; 610857at2; -.
DR   UniPathway; UPA00050; UER00064.
DR   Proteomes; UP000001355; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004413; F:homoserine kinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   GO; GO:0009088; P:threonine biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.230.10; -; 1.
DR   Gene3D; 3.30.70.890; -; 1.
DR   HAMAP; MF_00384; Homoser_kinase; 1.
DR   InterPro; IPR013750; GHMP_kinase_C_dom.
DR   InterPro; IPR036554; GHMP_kinase_C_sf.
DR   InterPro; IPR006204; GHMP_kinase_N_dom.
DR   InterPro; IPR006203; GHMP_knse_ATP-bd_CS.
DR   InterPro; IPR000870; Homoserine_kinase.
DR   InterPro; IPR020568; Ribosomal_S5_D2-typ_fold.
DR   InterPro; IPR014721; Ribosomal_S5_D2-typ_fold_subgr.
DR   Pfam; PF08544; GHMP_kinases_C; 1.
DR   Pfam; PF00288; GHMP_kinases_N; 1.
DR   PIRSF; PIRSF000676; Homoser_kin; 1.
DR   SUPFAM; SSF54211; SSF54211; 1.
DR   SUPFAM; SSF55060; SSF55060; 1.
DR   TIGRFAMs; TIGR00191; thrB; 1.
DR   PROSITE; PS00627; GHMP_KINASES_ATP; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; ATP-binding; Cytoplasm; Kinase;
KW   Nucleotide-binding; Reference proteome; Threonine biosynthesis;
KW   Transferase.
FT   CHAIN           1..310
FT                   /note="Homoserine kinase"
FT                   /id="PRO_1000060698"
FT   BINDING         91..101
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ   SEQUENCE   310 AA;  33396 MW;  E2BF2EDFE3F47103 CRC64;
     MSKASMLFSI TVPGSTANLG PGFDSVGMAL SRYLKLSVFD HDSWLFEAES DVVSGIPPGT
     DNLIYQTAKK VADHFGKTLP PVYVKVWSDI PLARGLGSSA AAIVAAIELA NQLLELNMTD
     DQKLFFASEV EGHPDNAGAS LFGGLLIGLH EEDKTHAVKV KHVDIDVVVV IPFYEVLTKD
     ARDVLPEDFS YKHAVSASAV SNVLVAALMT QNWPLVGEMM NKDLFHQPYR TMLVPELSKV
     EHVASLKGAY GTALSGAGPT ILTLIEKGKG EGLKKQLAQN FPHCEVDLLT VPVEGVVVEH
     DPVNQVKNVL